1. It can't capture a live event at femto-second resolution. It needs to illuminate a static object repeatedly with synchronised timing and heaps of processing.

2. You need a femto-second laser and amplifier, which need to be cryogenically cooled and with insane power requirements (looking at many kW of power consumption). These are very large and won't be dropping down in size for a while.

Watched it a couple of months ago, was always interested about how all these things you take for granted as being different, when you actually look at them deep enough act very similar. Pressure, light, liquid, gas, all work incredibly similar. Which makes sense.

I love how a scientist knowing what they know can get excited about certain things which from a technical view point is almost meaningless to the average Joe. But then with a seemingly simple demonstration turn that average Joes (me) ignorance into the same excitement and desire to know more that the scientist has.

Now and again ill watch a video of something that stikes me as so incredibly cool i cant imagine why we dont sink every spare buck we have into research.